Prenatal Chemosensory Learning by the Predatory Mite Neoseiulus californicus

Author(s)
Paulo C. Peralta Quesada, Peter Schausberger
Abstract

Background: Prenatal or embryonic learning, behavioral change following experience made prior to birth, may have significant consequences for postnatal foraging behavior in a wide variety of animals, including mammals, birds, fish, amphibians, and molluscs. However, prenatal learning has not been previously shown in arthropods such as insects, spiders and mites.

Methodology/Principal Findings: We examined prenatal chemosensory learning in the plant-inhabiting predatory mite Neoseiulus californicus. We exposed these predators in the embryonic stage to two flavors (vanillin or anisaldehyde) or no flavor (neutral) by feeding their mothers on spider mite prey enriched with these flavors or not enriched with any flavor (neutral). After the predators reached the protonymphal stage, we assessed their prey choice through residence and feeding preferences in experiments, in which they were offered spider mites matching the maternal diet (neutral, vanillin or anisaldehyde spider mites) and non-matching spider mites. Predator protonymphs preferentially resided in the vicinity of spider mites matching the maternal diet irrespective of the type of maternal diet and choice situation. Across treatments, the protonymphs preferentially fed on spider mites matching the maternal diet. Prey and predator sizes did not differ among neutral, vanillin and anisaldehyde treatments, excluding the hypothesis that size-assortative predation influenced the outcome of the experiments.

Conclusions/Significance: Our study reports the first example of prenatal learning in arthropods.

Organisation(s)
External organisation(s)
Universität für Bodenkultur Wien
Journal
PLoS ONE
Volume
7
No. of pages
6
ISSN
1932-6203
DOI
https://doi.org/10.1371/journal.pone.0053229
Publication date
12-2012
Peer reviewed
Yes
Austrian Fields of Science 2012
106047 Animal ecology, 106051 Behavioural biology
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/prenatal-chemosensory-learning-by-the-predatory-mite-neoseiulus-californicus(094e531b-1fef-4a53-a40d-30f4cbb6acd4).html